I'm on the edge of insanity

Ok, slight exaggeration but I'm desperate! Cat will not use her litter tray. Rarely has. She has a cat flap and can go in and out as she pleases. I've just pulled up the bathroom Lino and the stench on the wood flooring underneath is unbearable. I no longer let her upstairs. She's also pee'd in my hall carpet which no amount of cleaning will remove the lingering smell. Now she's peeing in my kitchen. She's always been like it but she used to go outside more. I've tried litter trays all over the place but she bloody wee's next to them. I completely adore her. She's nearly four and it's my only issue. First question? Is there any tips on how to get rid of the smell from floor boards and carpet? And how the hell do I get her to stop! Ps. I'm going to buy different litter today.

you might have to start from scratch. Try confining her into a small space and see if she uses the litter tray. Once she has established a routine of using it again - gradually expand the area. Hopefully she will continue to use the tray ?

Is she going inside because she's scared of a threat outside? New cat in her territory?You can change litter. Maybe start by confining her to one room. You MUST get rid of the smell or she will just keep coming back. You can get special cleaning stuff.

Can't remember what has been suggested on here. You need something that breaks down the smell. If floorboards are soaked I can't ever imagine getting that out! Definitely no cystitis? No other changes in behaviour?